Dns server not updating

The standalone plugin does not rely on any other server software running on the machine where you obtain the certificate.To obtain a certificate using a “standalone” webserver, you can use the standalone plugin by including on the command line.For instance, you may want to create a certificate using the webroot plugin for authentication and the apache plugin for installation, perhaps because you use a proxy or CDN for SSL and only want to secure the connection between them and your origin server, which cannot use the tls-sni-01 challenge due to the intermediate proxy.

We recommend backing up Nginx configurations before using it (though you can also revert changes to configurations with Use standalone mode to obtain a certificate if you don’t want to use (or don’t currently have) existing server software.Plugins that do both can be used with the Under the hood, plugins use one of several ACME protocol challenges to prove you control a domain.The options are http-01 (which uses port 80), tls-sni-01 (port 443) and dns-01 (requiring configuration of a DNS server on port 53, though that’s often not the same machine as your webserver).If you specify multiple domains to authenticate, they will all be listed in a single certificate.To obtain multiple separate certificates you will need to run Certbot multiple times.